<template>
    <view class="my-settle-container">
        <!-- 全选 -->
        <label class="radio" @click="changeAllstate">
            <radio color="#c00000" :checked="isFullCheck"></radio><text>全选</text>
        </label>
        <!-- 合计 -->
        <view class="amount-box">
            合计：<text class="amount">￥{{checkedGoodsAmount}}</text>
        </view>
        <!-- 结算按钮 -->
        <view class="btn-settle" @click="settlement">
            结算({{checkedCount}})
        </view>
    </view>
    
</template>

<script>
    import {mapGetters , mapMutations , mapState} from 'vuex'
    export default {
        name:"my-settle",
        data() {
            return {
                // 倒计时的秒数
                seconds:3,
                timer:null // 定时器的id
            };
        },
        methods:{
            ...mapMutations('m_cart',['updateAllGoodsState']),
            ...mapMutations('m_user',['updateRedirectInfo']),
            changeAllstate(){
                this.updateAllGoodsState(!this.isFullCheck)
            },
            settlement(){
                // 1. 是否勾选商品
                if(!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')
                // 2. 是否选了收货地址
                if(!this.addstr) return uni.$showMsg('请先选择收货地址！')
                // 3. 是否登陆了，若没有，则调用delayNavigate()进行倒计时的导航跳转
                // if(!this.token) return uni.$showMsg('请先登录！')
                if(!this.token) return this.delayNavigate()
                  // 4. 实现微信支付功能
                  this.payOrder()
            },
            // 微信支付
            async payOrder() {
              // 1. 创建订单
              // 1.1 组织订单的信息对象
              const orderInfo = {
                // 开发期间，注释掉真实的订单价格，
                // order_price: this.checkedGoodsAmount,
                // 写死订单总价为 1 分钱
                order_price: 0.01,
                consignee_addr: this.addstr,
                goods: this.cart.filter(x => x.goods_state).map(x => ({ goods_id: x.goods_id, goods_number: x.goods_count, goods_price: x.goods_price }))
              }
              // 1.2 发起请求创建订单
              const { data: res } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
              if (res.meta.status !== 200) return uni.$showMsg('创建订单失败！')
              // 1.3 得到服务器响应的“订单编号”
              const orderNumber = res.message.order_number
            console.log(orderNumber)
              // 2. 订单预支付
              // 2.1 发起请求获取订单的支付信息
              const { data: res2 } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', { order_number: orderNumber })
              // 2.2 预付订单生成失败
              if (res2.meta.status !== 200) return uni.$showError('预付订单生成失败！')
              // 2.3 得到订单支付相关的必要参数
              const payInfo = res2.message.pay
            
               // 3. 发起微信支付
               // 3.1 调用 uni.requestPayment() 发起微信支付
               const [err, succ] = await uni.requestPayment(payInfo)
               // 3.2 未完成支付
               if (err) return uni.$showMsg('订单未支付！')
               // 3.3 完成了支付，进一步查询支付的结果
               const { data: res3 } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', { order_number: orderNumber })
               // 3.4 检测到订单未支付
               if (res3.meta.status !== 200) return uni.$showMsg('订单未支付！')
               // 3.5 检测到订单支付完成
               uni.showToast({
                 title: '支付完成！',
                 icon: 'success'
               })
             },
            delayNavigate(){
                this.seconds = 3
                // 1. 展示提示信息,此时seconds 的值等于3
                this.showTips(this.seconds)
                this.timer = setInterval(()=>{
                    this.seconds--
                    if(this.seconds <= 0)
                    {
                        clearInterval(this.timer)
                        uni.switchTab({
                            url:'/pages/my/my',
                            success: ()=>{
                                this.updateRedirectInfo({
                                    openType:'switchTab',
                                    from:'/pages/cart/cart'
                                })
                            }
                        })
                        return
                    }
                    this.showTips(this.seconds) 
                },1000)
            },
            showTips(n){
                uni.showToast({
                    icon:'none',
                    title:'请登录后再结算！' + n + '秒后自动跳转到登录页',
                    // 添加透明遮罩，防止点击穿透
                    mask:true,
                    // 1.5 秒后自动消失
                    duration: 1500
                })
            },
        },
        computed:{
            ...mapGetters('m_cart',['checkedCount','total','checkedGoodsAmount']),
            ...mapGetters('m_user',['addstr']),
            // token 是用户登录成功之后的 token 字符串
            ...mapState('m_user',['token']),
            ...mapState('m_cart',['cart']),
            isFullCheck(){
                return this.total === this.checkedCount
            }
        }
    }
</script>

<style lang="scss">
.my-settle-container {
    position: fixed;
    bottom:0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: white;
    display:flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    .radio{
        display: flex;
        align-items: center;
    }
    .amount-box {
        .amount {
            color:#c00000;
            font-weight: bold;
        }
    }
    .btn-settle {
        background-color: #c00000;
        height: 50px;
        color: white;
        line-height: 50px;
        padding: 0 10px;
        min-width: 100px;
        text-align: center;
    }
}
</style>